Families of those aboard flight 370 are grappling with the news from the Malaysian government that no one survived.

But they still want evidence.

Authorities are hoping to find that physical evidence when the weather improves, and the search resumes.

This could be the key to solving the mystery of Malaysian airlines flight MH 370.

An underwater vehicle that works in the deep sea, called a remotely operating vehicle, ROV for short.

It's what the Malaysian government has added to its fleet of resources, in hopes of recovering some of the most critical pieces of evidence from the deep sea.

"Well the two key pieces of evidence that outweigh all other evidence are the flight data recorder and the cockpit voice recorder," former director of FAA Office of Accident Investigation, Steven Wallace told CNN.